Radiator composed of removable elements



C. MICAL RADIATOR COMPOSED 0F REMOVABLE ELEMENTS I Oct. 5, 1937.

Filed Jan. 9, 1936 Patented Oct. 5, .1937

I Camille MicakAsnieres, France Application January 9, 1936, Serial No. 58,394. In France January 26, 1935 Z CIaims. (01. 257-425) This invention relates to a radiator composed of removable elements in which the upper and lower water tanks receive, in the known manner, the headers of the various bundles of heat exchanging tubes, arranged parallel to each other.

The radiator of this invention is made up of separate elements arranged for assemblage into radiator'form; or disassemblage at will to provide 'forremoval of and permit accessibility to the 10 radiator tubes; the construction including valves for establishing water communication between the tubes and fixed tanks of the radiator, with the means for connecting or disconnecting the radiator parts providing for simultaneous control of the valves duringdisconnection. For that purpose, the water tanks carry hollow cross memjbers' forming channels and projecting forwardly for allowing to fit therein the corresponding headers of the bundles of heat exchanging tubes. 20 Each cross member encloses any valve the rodof which extends outwardly and isterminally formed to provide aterminal corresponding to a screwdriver end. The rod is screw-threaded, so that it can be screwed in, the cross member when 2 a blind nut drives it, by means of the screwdriver, by itself screwing on the screw-thread of the front end of said cross member. By means of these arrangements, any angular displacement of the blind nut, in one direction or the other,

30 simultaneously produces translations, in the same directions, of the valve.

This device isof. particular advantage when the heatexchanging surface of the radiator is relatively large, as, for instance, for motor lorries. 35 In the accompanying drawing-i Fig. 1 is a front view of aradiator constructed. according to the invention.

Fig. 2 is a vertical section of the radiator. Fig. '3 is a vertical longitudinal section of an 40 element connecting the bundle oftubes to the water tanks.

Fig. 4 is a section made according to line 4-4 of Fig. 3. V

Fig. 5 shows a modification in the mode of se-j 45 curing the bundle of tubes'in position.

The upper and lower water tanks l and 2 are 55 between them spacedchanncls, the upper pore end. of the cross member 4 is screweda cap l3,

tions of which are preferably rounded, as clearly shownin Figure 1. In each channel is arranged a hollow sleeve-likecross member 4, the rear end I of which is removably secured in a non-leaking manner in the vertical wallof the particular off- 5 set 3. These cross members 4 thus form upper and lower rows and serve forthe assemblage of the heat exchanging tubes5. For that purpose, the elements of each bundle are inserted, at their upper and lower ends, in plates 6 constituting 10 the wall of common headers 6a. Each header 6a fits slidably over the cross member 4. The

member 4 is screwed in the reinforced wall of the tank and secured by'a nut I, then the header 6a formed with suitable holes 61) is slipped over the fixed member and retained thereon by a nut 1,..Washers 8 are provided, to prevent leakage. .The front end of the crossmembers 4 is internally screw-threaded for allowing the corresponding portion ofthe rod 9 of a valve l0 to be screwed therein. The front end of the rod 9 has an extension [5 forming aiscrewdriver. Its inner end is provided with a cylindrical bearing por' tion .I [terminating in, the conical valve I0.

On thescrew-threaded portion l2 of the front in the bottom of which is provided a recess M for the screwdriver form terminal l5. In these conditions, when the cap I3 is screwed on the cross member 4, the rod 9 of the valve is simultaneously screwed, by means of the screwdriver I5, in the internally screw-threaded portion of said cross member 4. The valve In thus receives a helical displacement which moves it away from its seat IS. The water tank is thereby put in communication with the corresponding header of the bundle of heat exchanging elements.

Reversely, the unscrewing of the cap l3 causes the valve H] to be moved in the reverse direction.

' is completely closed. As a result of this construction, any group of heat'exchanging. elements can be removed atwill for repair or replacement.

The arrangement described can moreover be so devised as to allow the degree of opening of the valves H] to be adjusted, and this for the purpose of controlling the capacity of heat dispersion of the apparatus. Consequently, it will be understood that it sufiices to control the number of revolutions imparted to the screw-threaded rod 9 of valve Ill in the internally screw-threaded portion or the fixed cross member 4. r A simple means, allowing an easy control, con

sists in covering the operating cap l3 with another cap [1 constituting an abutment for the cross member 4; the relative longitudinal positions of the operating cap l3 and of the abutment-cap I! being determined by interposition between said caps of intermediate washers 18. For that purpose, the operating cap I3 is provided with an extension constituted by an end piece l9 having flat side portions and terminating in a screw-threaded member 20. This end piece l9 passes through an opening, of the same shape as its cross section, formed in the bottom of the abutment-cap and it externally receives, on its screw-threaded portion, a nut 2|. The washers l8 are provided with an opening the shape of which allows them to be fitted over the end piece l9 and the outer diameter of which is such that they can be inserted within the abutment-cap. In this way, the washers l8 can be either all external, or all internal, or some external and the others internal.

The longitudinal relation of the operating cap 13 relative to the bearing face of the abutment-cap I! may thus be varied. As the longitudinal relation of the cap l'. to the operating cap l3 will control the extent to which the cap l3 may be screwed in place before the cap I! reaches its limit of movement, it is apparent that this variation of longitudinal position between the caps l1 and I3 will determine the opening extent of the valve l0. Thus, the movement of any one of the valves l and consequently fluid communication between the water tank and header controlled by such valve may be readily varied at will.

It is intended that the Washers l8 be fixed in number in any installation and that where the fixed number of Washers I8 are arranged within the cap I! and between it and the cap l3 in order to permit maximum screwing movement of the cap l3, the knowledge that all of the washers are between the caps will indicate that the particular valve II] has been opened to its maximum. Where adjustment of this opening is desired, one or more of the washers l8 will be removed from a position between the caps and placed exteriorly of the cap I! between it and the nut 2|. The externally placed washers being visible will indicate a corresponding absence of such washers between the caps l3 and I1 and also indicate a correspondingly limited movement of the cap l3 before the abutment cap I! reaches its limit. This limited movement of the cap l3 will, of course, compel a correspondingly limited opening movement of the valve l0, and thus the user, by noting the number of washers between the cap I! and the nut 2| or the absence of such washers in such position, will at once be advised as to the extent to which the particular valve [0 has been opened.

The possibility of putting selected bundles of heat exchanging elements out of service or of varying the positions of the valves permits the cooling capacity of the radiator to be adapted to the thermo development of the engine.

constructional modifications can be made in the arrangements described and illustrated without departing thereby from the scope of the invention.

I claim:

1. A radiator comprising upper and lower water tanks, removable radiator elements having upper and lower headers, tubular members fixed on and communicating with said water tanks, said headers having holes adapted to be passed over said tubular members and said tubular members having lateral openings adapted to communicate with said headers, a valve associated with each tubular member, having a rod screwed in said tubular member and operable by rotation to open and close the communication from said water tank to said header, nuts screwed on said tubular member for fixing said header to said tank, a closure cap screwed on the end of said tubular member and interengaging parts formed on said valve rod and closure cap, so that unscrewing of said closure cap will cause rotation of the valve rod so as to close the valve.

2. A radiator as claimed in claim 1, including an abutment cap fitted over said closure cap and a variable number of spacing washers placed between said caps.

CAMILLE lVDICAL. 

